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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
treeb406c5242a088c4f59c6e4b719b783f43aca6ae9 /arch/powerpc/platforms
parentAdding upstream version 6.7.12. (diff)
downloadlinux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz
linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/44x/idle.c2
-rw-r--r--arch/powerpc/platforms/44x/warp.c1
-rw-r--r--arch/powerpc/platforms/512x/mpc5121_ads_cpld.c2
-rw-r--r--arch/powerpc/platforms/512x/pdm360ng.c2
-rw-r--r--arch/powerpc/platforms/83xx/suspend.c5
-rw-r--r--arch/powerpc/platforms/85xx/mpc8536_ds.c2
-rw-r--r--arch/powerpc/platforms/85xx/mpc85xx_rdb.c2
-rw-r--r--arch/powerpc/platforms/85xx/mvme2500.c2
-rw-r--r--arch/powerpc/platforms/85xx/p1010rdb.c2
-rw-r--r--arch/powerpc/platforms/85xx/p1022_ds.c6
-rw-r--r--arch/powerpc/platforms/85xx/p1022_rdk.c6
-rw-r--r--arch/powerpc/platforms/85xx/socrates_fpga_pic.c2
-rw-r--r--arch/powerpc/platforms/85xx/xes_mpc85xx.c2
-rw-r--r--arch/powerpc/platforms/86xx/Kconfig7
-rw-r--r--arch/powerpc/platforms/cell/spufs/inode.c5
-rw-r--r--arch/powerpc/platforms/pasemi/setup.c2
-rw-r--r--arch/powerpc/platforms/powermac/smp.c4
-rw-r--r--arch/powerpc/platforms/powernv/opal-prd.c2
-rw-r--r--arch/powerpc/platforms/powernv/opal.c14
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c2
-rw-r--r--arch/powerpc/platforms/powernv/subcore.c3
-rw-r--r--arch/powerpc/platforms/ps3/Kconfig12
-rw-r--r--arch/powerpc/platforms/ps3/Makefile2
-rw-r--r--arch/powerpc/platforms/ps3/device-init.c1
-rw-r--r--arch/powerpc/platforms/ps3/gelic_udbg.c1
-rw-r--r--arch/powerpc/platforms/pseries/Makefile1
-rw-r--r--arch/powerpc/platforms/pseries/eeh_pseries.c18
-rw-r--r--arch/powerpc/platforms/pseries/hotplug-memory.c7
-rw-r--r--arch/powerpc/platforms/pseries/hvconsole.c4
-rw-r--r--arch/powerpc/platforms/pseries/papr-sysparm.c205
-rw-r--r--arch/powerpc/platforms/pseries/papr-vpd.c541
-rw-r--r--arch/powerpc/platforms/pseries/pseries.h1
-rw-r--r--arch/powerpc/platforms/pseries/suspend.c1
33 files changed, 807 insertions, 62 deletions
diff --git a/arch/powerpc/platforms/44x/idle.c b/arch/powerpc/platforms/44x/idle.c
index f533b495e7..e2eeef8dff 100644
--- a/arch/powerpc/platforms/44x/idle.c
+++ b/arch/powerpc/platforms/44x/idle.c
@@ -27,7 +27,7 @@ static void ppc44x_idle(void)
isync();
}
-int __init ppc44x_idle_init(void)
+static int __init ppc44x_idle_init(void)
{
if (!mode_spin) {
/* If we are not setting spin mode
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
index bf0188dcb9..a5001d32f9 100644
--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -8,6 +8,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/kthread.h>
#include <linux/leds.h>
#include <linux/i2c.h>
diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
index 6f08d07aee..e995eb30bf 100644
--- a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
+++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c
@@ -17,6 +17,8 @@
#include <linux/of_address.h>
#include <linux/of_irq.h>
+#include "mpc5121_ads.h"
+
static struct device_node *cpld_pic_node;
static struct irq_domain *cpld_pic_host;
diff --git a/arch/powerpc/platforms/512x/pdm360ng.c b/arch/powerpc/platforms/512x/pdm360ng.c
index ce51cfeeb0..8bbbf78bb4 100644
--- a/arch/powerpc/platforms/512x/pdm360ng.c
+++ b/arch/powerpc/platforms/512x/pdm360ng.c
@@ -101,7 +101,7 @@ static inline void __init pdm360ng_touchscreen_init(void)
}
#endif /* CONFIG_TOUCHSCREEN_ADS7846 */
-void __init pdm360ng_init(void)
+static void __init pdm360ng_init(void)
{
mpc512x_init();
pdm360ng_touchscreen_init();
diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c
index 9833c36bda..c9664e46b0 100644
--- a/arch/powerpc/platforms/83xx/suspend.c
+++ b/arch/powerpc/platforms/83xx/suspend.c
@@ -261,9 +261,10 @@ static int mpc83xx_suspend_begin(suspend_state_t state)
static int agent_thread_fn(void *data)
{
+ set_freezable();
+
while (1) {
- wait_event_interruptible(agent_wq, pci_pm_state >= 2);
- try_to_freeze();
+ wait_event_freezable(agent_wq, pci_pm_state >= 2);
if (signal_pending(current) || pci_pm_state < 2)
continue;
diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c
index e966b2ad8e..b3327a358e 100644
--- a/arch/powerpc/platforms/85xx/mpc8536_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c
@@ -27,7 +27,7 @@
#include "mpc85xx.h"
-void __init mpc8536_ds_pic_init(void)
+static void __init mpc8536_ds_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index ec9f60fbeb..e0cec670d8 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
@@ -76,7 +76,7 @@ static void __init mpc85xx_rdb_setup_arch(void)
/* P1025 has pins muxed for QE and other functions. To
* enable QE UEC mode, we need to set bit QE0 for UCC1
* in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
- * and QE12 for QE MII management singals in PMUXCR
+ * and QE12 for QE MII management signals in PMUXCR
* register.
*/
setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
diff --git a/arch/powerpc/platforms/85xx/mvme2500.c b/arch/powerpc/platforms/85xx/mvme2500.c
index 1b59e45a0c..19122daadb 100644
--- a/arch/powerpc/platforms/85xx/mvme2500.c
+++ b/arch/powerpc/platforms/85xx/mvme2500.c
@@ -21,7 +21,7 @@
#include "mpc85xx.h"
-void __init mvme2500_pic_init(void)
+static void __init mvme2500_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0,
MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/p1010rdb.c b/arch/powerpc/platforms/85xx/p1010rdb.c
index 10d6f1fa33..491895ac8b 100644
--- a/arch/powerpc/platforms/85xx/p1010rdb.c
+++ b/arch/powerpc/platforms/85xx/p1010rdb.c
@@ -24,7 +24,7 @@
#include "mpc85xx.h"
-void __init p1010_rdb_pic_init(void)
+static void __init p1010_rdb_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c
index 0dd786a061..adc3a2ee14 100644
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c
@@ -370,7 +370,7 @@ exit:
*
* @pixclock: the wavelength, in picoseconds, of the clock
*/
-void p1022ds_set_pixel_clock(unsigned int pixclock)
+static void p1022ds_set_pixel_clock(unsigned int pixclock)
{
struct device_node *guts_np = NULL;
struct ccsr_guts __iomem *guts;
@@ -418,7 +418,7 @@ void p1022ds_set_pixel_clock(unsigned int pixclock)
/**
* p1022ds_valid_monitor_port: set the monitor port for sysfs
*/
-enum fsl_diu_monitor_port
+static enum fsl_diu_monitor_port
p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port)
{
switch (port) {
@@ -432,7 +432,7 @@ p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port)
#endif
-void __init p1022_ds_pic_init(void)
+static void __init p1022_ds_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/p1022_rdk.c b/arch/powerpc/platforms/85xx/p1022_rdk.c
index 25ab6e9c14..6198299d95 100644
--- a/arch/powerpc/platforms/85xx/p1022_rdk.c
+++ b/arch/powerpc/platforms/85xx/p1022_rdk.c
@@ -40,7 +40,7 @@
*
* @pixclock: the wavelength, in picoseconds, of the clock
*/
-void p1022rdk_set_pixel_clock(unsigned int pixclock)
+static void p1022rdk_set_pixel_clock(unsigned int pixclock)
{
struct device_node *guts_np = NULL;
struct ccsr_guts __iomem *guts;
@@ -88,7 +88,7 @@ void p1022rdk_set_pixel_clock(unsigned int pixclock)
/**
* p1022rdk_valid_monitor_port: set the monitor port for sysfs
*/
-enum fsl_diu_monitor_port
+static enum fsl_diu_monitor_port
p1022rdk_valid_monitor_port(enum fsl_diu_monitor_port port)
{
return FSL_DIU_PORT_DVI;
@@ -96,7 +96,7 @@ p1022rdk_valid_monitor_port(enum fsl_diu_monitor_port port)
#endif
-void __init p1022_rdk_pic_init(void)
+static void __init p1022_rdk_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
MPIC_SINGLE_DEST_CPU,
diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
index baa12eff6d..60e0b8947c 100644
--- a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
+++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c
@@ -8,6 +8,8 @@
#include <linux/of_irq.h>
#include <linux/io.h>
+#include "socrates_fpga_pic.h"
+
/*
* The FPGA supports 9 interrupt sources, which can be routed to 3
* interrupt request lines of the MPIC. The line to be used can be
diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index 45f257fc1a..2582427d8d 100644
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
@@ -37,7 +37,7 @@
#define MPC85xx_L2CTL_L2I 0x40000000 /* L2 flash invalidate */
#define MPC85xx_L2CTL_L2SIZ_MASK 0x30000000 /* L2 SRAM size (R/O) */
-void __init xes_mpc85xx_pic_init(void)
+static void __init xes_mpc85xx_pic_init(void)
{
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
0, 256, " OpenPIC ");
diff --git a/arch/powerpc/platforms/86xx/Kconfig b/arch/powerpc/platforms/86xx/Kconfig
index 67467cd6f3..06b1e5c49d 100644
--- a/arch/powerpc/platforms/86xx/Kconfig
+++ b/arch/powerpc/platforms/86xx/Kconfig
@@ -52,10 +52,3 @@ config MPC8641
select MPIC
default y if GEF_SBC610 || GEF_SBC310 || GEF_PPC9A \
|| MVME7100
-
-config MPC8610
- bool
- select HAVE_PCI
- select FSL_PCI if PCI
- select PPC_UDBG_16550
- select MPIC
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 10c1320adf..030de2b8c1 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -145,10 +145,11 @@ spufs_evict_inode(struct inode *inode)
static void spufs_prune_dir(struct dentry *dir)
{
- struct dentry *dentry, *tmp;
+ struct dentry *dentry;
+ struct hlist_node *n;
inode_lock(d_inode(dir));
- list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) {
+ hlist_for_each_entry_safe(dentry, n, &dir->d_children, d_sib) {
spin_lock(&dentry->d_lock);
if (simple_positive(dentry)) {
dget_dlock(dentry);
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index ef985ba2bf..0761d98e5b 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -64,7 +64,7 @@ static void __noreturn pas_restart(char *cmd)
}
#ifdef CONFIG_PPC_PASEMI_NEMO
-void pas_shutdown(void)
+static void pas_shutdown(void)
{
/* Set the PLD bit that makes the SB600 think the power button is being pressed */
void __iomem *pld_map = ioremap(0xf5000000,4096);
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index c83d1e1407..15644be319 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -413,7 +413,7 @@ static void __init smp_psurge_setup_cpu(int cpu_nr)
printk(KERN_ERR "Couldn't get primary IPI interrupt");
}
-void __init smp_psurge_take_timebase(void)
+static void __init smp_psurge_take_timebase(void)
{
if (psurge_type != PSURGE_DUAL)
return;
@@ -429,7 +429,7 @@ void __init smp_psurge_take_timebase(void)
set_dec(tb_ticks_per_jiffy/2);
}
-void __init smp_psurge_give_timebase(void)
+static void __init smp_psurge_give_timebase(void)
{
/* Nothing to do here */
}
diff --git a/arch/powerpc/platforms/powernv/opal-prd.c b/arch/powerpc/platforms/powernv/opal-prd.c
index 327e2f7690..b66b06efce 100644
--- a/arch/powerpc/platforms/powernv/opal-prd.c
+++ b/arch/powerpc/platforms/powernv/opal-prd.c
@@ -66,6 +66,8 @@ static bool opal_prd_range_is_valid(uint64_t addr, uint64_t size)
const char *label;
addrp = of_get_address(node, 0, &range_size, NULL);
+ if (!addrp)
+ continue;
range_addr = of_read_number(addrp, 2);
range_end = range_addr + range_size;
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index cdf3838f08..45dd77e3cc 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -424,7 +424,7 @@ static int __init opal_message_init(struct device_node *opal_node)
return 0;
}
-int opal_get_chars(uint32_t vtermno, char *buf, int count)
+ssize_t opal_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
s64 rc;
__be64 evt, len;
@@ -441,10 +441,11 @@ int opal_get_chars(uint32_t vtermno, char *buf, int count)
return 0;
}
-static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, bool atomic)
+static ssize_t __opal_put_chars(uint32_t vtermno, const u8 *data,
+ size_t total_len, bool atomic)
{
unsigned long flags = 0 /* shut up gcc */;
- int written;
+ ssize_t written;
__be64 olen;
s64 rc;
@@ -484,7 +485,7 @@ static int __opal_put_chars(uint32_t vtermno, const char *data, int total_len, b
if (atomic) {
/* Should not happen */
pr_warn("atomic console write returned partial "
- "len=%d written=%d\n", total_len, written);
+ "len=%zu written=%zd\n", total_len, written);
}
if (!written)
written = -EAGAIN;
@@ -497,7 +498,7 @@ out:
return written;
}
-int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
+ssize_t opal_put_chars(uint32_t vtermno, const u8 *data, size_t total_len)
{
return __opal_put_chars(vtermno, data, total_len, false);
}
@@ -508,7 +509,8 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len)
* true at the moment because console space can race with OPAL's console
* writes.
*/
-int opal_put_chars_atomic(uint32_t vtermno, const char *data, int total_len)
+ssize_t opal_put_chars_atomic(uint32_t vtermno, const u8 *data,
+ size_t total_len)
{
return __opal_put_chars(vtermno, data, total_len, true);
}
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 28fac47700..23f5b5093e 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1389,7 +1389,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe)
* DMA window can be larger than available memory, which will
* cause errors later.
*/
- const u64 maxblock = 1UL << (PAGE_SHIFT + MAX_ORDER);
+ const u64 maxblock = 1UL << (PAGE_SHIFT + MAX_PAGE_ORDER);
/*
* We create the default window as big as we can. The constraint is
diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c
index 191424468f..393e747541 100644
--- a/arch/powerpc/platforms/powernv/subcore.c
+++ b/arch/powerpc/platforms/powernv/subcore.c
@@ -425,7 +425,8 @@ static int subcore_init(void)
if (pvr_ver != PVR_POWER8 &&
pvr_ver != PVR_POWER8E &&
- pvr_ver != PVR_POWER8NVL)
+ pvr_ver != PVR_POWER8NVL &&
+ pvr_ver != PVR_HX_C2000)
return 0;
/*
diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig
index 1bd1b0b49b..706194e5f0 100644
--- a/arch/powerpc/platforms/ps3/Kconfig
+++ b/arch/powerpc/platforms/ps3/Kconfig
@@ -168,16 +168,4 @@ config PS3_LPM
profiling support of the Cell processor with programs like
perfmon2, then say Y or M, otherwise say N.
-config PS3GELIC_UDBG
- bool "PS3 udbg output via UDP broadcasts on Ethernet"
- depends on PPC_PS3
- help
- Enables udbg early debugging output by sending broadcast UDP
- via the Ethernet port (UDP port number 18194).
-
- This driver uses a trivial implementation and is independent
- from the main PS3 gelic network driver.
-
- If in doubt, say N here.
-
endmenu
diff --git a/arch/powerpc/platforms/ps3/Makefile b/arch/powerpc/platforms/ps3/Makefile
index 86bf2967a8..bc79bb124d 100644
--- a/arch/powerpc/platforms/ps3/Makefile
+++ b/arch/powerpc/platforms/ps3/Makefile
@@ -3,7 +3,7 @@ obj-y += setup.o mm.o time.o hvcall.o htab.o repository.o
obj-y += interrupt.o exports.o os-area.o
obj-y += system-bus.o
-obj-$(CONFIG_PS3GELIC_UDBG) += gelic_udbg.o
+obj-$(CONFIG_PPC_EARLY_DEBUG_PS3GELIC) += gelic_udbg.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_SPU_BASE) += spu.o
obj-y += device-init.o
diff --git a/arch/powerpc/platforms/ps3/device-init.c b/arch/powerpc/platforms/ps3/device-init.c
index e87360a0fb..878bc16024 100644
--- a/arch/powerpc/platforms/ps3/device-init.c
+++ b/arch/powerpc/platforms/ps3/device-init.c
@@ -827,6 +827,7 @@ static int ps3_probe_thread(void *data)
if (res)
goto fail_free_irq;
+ set_freezable();
/* Loop here processing the requested notification events. */
do {
try_to_freeze();
diff --git a/arch/powerpc/platforms/ps3/gelic_udbg.c b/arch/powerpc/platforms/ps3/gelic_udbg.c
index 6b298010fd..a5202c18c2 100644
--- a/arch/powerpc/platforms/ps3/gelic_udbg.c
+++ b/arch/powerpc/platforms/ps3/gelic_udbg.c
@@ -14,6 +14,7 @@
#include <linux/ip.h>
#include <linux/udp.h>
+#include <asm/ps3.h>
#include <asm/io.h>
#include <asm/udbg.h>
#include <asm/lv1call.h>
diff --git a/arch/powerpc/platforms/pseries/Makefile b/arch/powerpc/platforms/pseries/Makefile
index 1476c5e443..f936962a29 100644
--- a/arch/powerpc/platforms/pseries/Makefile
+++ b/arch/powerpc/platforms/pseries/Makefile
@@ -4,6 +4,7 @@ ccflags-$(CONFIG_PPC_PSERIES_DEBUG) += -DDEBUG
obj-y := lpar.o hvCall.o nvram.o reconfig.o \
of_helpers.o rtas-work-area.o papr-sysparm.o \
+ papr-vpd.o \
setup.o iommu.o event_sources.o ras.o \
firmware.o power.o dlpar.o mobility.o rng.o \
pci.o pci_dlpar.o eeh_pseries.o msi.o \
diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
index def184da51..b1ae0c0d11 100644
--- a/arch/powerpc/platforms/pseries/eeh_pseries.c
+++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
@@ -252,7 +252,7 @@ static int pseries_eeh_cap_start(struct pci_dn *pdn)
if (!pdn)
return 0;
- rtas_read_config(pdn, PCI_STATUS, 2, &status);
+ rtas_pci_dn_read_config(pdn, PCI_STATUS, 2, &status);
if (!(status & PCI_STATUS_CAP_LIST))
return 0;
@@ -270,11 +270,11 @@ static int pseries_eeh_find_cap(struct pci_dn *pdn, int cap)
return 0;
while (cnt--) {
- rtas_read_config(pdn, pos, 1, &pos);
+ rtas_pci_dn_read_config(pdn, pos, 1, &pos);
if (pos < 0x40)
break;
pos &= ~3;
- rtas_read_config(pdn, pos + PCI_CAP_LIST_ID, 1, &id);
+ rtas_pci_dn_read_config(pdn, pos + PCI_CAP_LIST_ID, 1, &id);
if (id == 0xff)
break;
if (id == cap)
@@ -294,7 +294,7 @@ static int pseries_eeh_find_ecap(struct pci_dn *pdn, int cap)
if (!edev || !edev->pcie_cap)
return 0;
- if (rtas_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
+ if (rtas_pci_dn_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
return 0;
else if (!header)
return 0;
@@ -307,7 +307,7 @@ static int pseries_eeh_find_ecap(struct pci_dn *pdn, int cap)
if (pos < 256)
break;
- if (rtas_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
+ if (rtas_pci_dn_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
break;
}
@@ -412,8 +412,8 @@ static void pseries_eeh_init_edev(struct pci_dn *pdn)
if ((pdn->class_code >> 8) == PCI_CLASS_BRIDGE_PCI) {
edev->mode |= EEH_DEV_BRIDGE;
if (edev->pcie_cap) {
- rtas_read_config(pdn, edev->pcie_cap + PCI_EXP_FLAGS,
- 2, &pcie_flags);
+ rtas_pci_dn_read_config(pdn, edev->pcie_cap + PCI_EXP_FLAGS,
+ 2, &pcie_flags);
pcie_flags = (pcie_flags & PCI_EXP_FLAGS_TYPE) >> 4;
if (pcie_flags == PCI_EXP_TYPE_ROOT_PORT)
edev->mode |= EEH_DEV_ROOT_PORT;
@@ -676,7 +676,7 @@ static int pseries_eeh_read_config(struct eeh_dev *edev, int where, int size, u3
{
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
- return rtas_read_config(pdn, where, size, val);
+ return rtas_pci_dn_read_config(pdn, where, size, val);
}
/**
@@ -692,7 +692,7 @@ static int pseries_eeh_write_config(struct eeh_dev *edev, int where, int size, u
{
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
- return rtas_write_config(pdn, where, size, val);
+ return rtas_pci_dn_write_config(pdn, where, size, val);
}
#ifdef CONFIG_PCI_IOV
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 6f2eebae7b..3fe3ddb30c 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -208,8 +208,10 @@ static int dlpar_change_lmb_state(struct drmem_lmb *lmb, bool online)
int rc;
mem_block = lmb_to_memblock(lmb);
- if (!mem_block)
+ if (!mem_block) {
+ pr_err("Failed memory block lookup for LMB 0x%x\n", lmb->drc_index);
return -EINVAL;
+ }
if (online && mem_block->dev.offline)
rc = device_online(&mem_block->dev);
@@ -576,6 +578,7 @@ static int dlpar_add_lmb(struct drmem_lmb *lmb)
rc = update_lmb_associativity_index(lmb);
if (rc) {
dlpar_release_drc(lmb->drc_index);
+ pr_err("Failed to configure LMB 0x%x\n", lmb->drc_index);
return rc;
}
@@ -589,12 +592,14 @@ static int dlpar_add_lmb(struct drmem_lmb *lmb)
/* Add the memory */
rc = __add_memory(nid, lmb->base_addr, block_sz, MHP_MEMMAP_ON_MEMORY);
if (rc) {
+ pr_err("Failed to add LMB 0x%x to node %u", lmb->drc_index, nid);
invalidate_lmb_associativity_index(lmb);
return rc;
}
rc = dlpar_online_lmb(lmb);
if (rc) {
+ pr_err("Failed to online LMB 0x%x on node %u\n", lmb->drc_index, nid);
__remove_memory(lmb->base_addr, block_sz);
invalidate_lmb_associativity_index(lmb);
} else {
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index 1ac52963e0..8803c94799 100644
--- a/arch/powerpc/platforms/pseries/hvconsole.c
+++ b/arch/powerpc/platforms/pseries/hvconsole.c
@@ -25,7 +25,7 @@
* firmware.
* @count: not used?
*/
-int hvc_get_chars(uint32_t vtermno, char *buf, int count)
+ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count)
{
long ret;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(hvc_get_chars);
* firmware. Must be at least 16 bytes, even if count is less than 16.
* @count: Send this number of characters.
*/
-int hvc_put_chars(uint32_t vtermno, const char *buf, int count)
+ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count)
{
unsigned long *lbuf = (unsigned long *) buf;
long ret;
diff --git a/arch/powerpc/platforms/pseries/papr-sysparm.c b/arch/powerpc/platforms/pseries/papr-sysparm.c
index fedc61599e..7063ce8884 100644
--- a/arch/powerpc/platforms/pseries/papr-sysparm.c
+++ b/arch/powerpc/platforms/pseries/papr-sysparm.c
@@ -2,14 +2,20 @@
#define pr_fmt(fmt) "papr-sysparm: " fmt
+#include <linux/anon_inodes.h>
#include <linux/bug.h>
+#include <linux/file.h>
+#include <linux/fs.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/miscdevice.h>
#include <linux/printk.h>
#include <linux/slab.h>
-#include <asm/rtas.h>
+#include <linux/uaccess.h>
+#include <asm/machdep.h>
#include <asm/papr-sysparm.h>
#include <asm/rtas-work-area.h>
+#include <asm/rtas.h>
struct papr_sysparm_buf *papr_sysparm_buf_alloc(void)
{
@@ -23,6 +29,46 @@ void papr_sysparm_buf_free(struct papr_sysparm_buf *buf)
kfree(buf);
}
+static size_t papr_sysparm_buf_get_length(const struct papr_sysparm_buf *buf)
+{
+ return be16_to_cpu(buf->len);
+}
+
+static void papr_sysparm_buf_set_length(struct papr_sysparm_buf *buf, size_t length)
+{
+ WARN_ONCE(length > sizeof(buf->val),
+ "bogus length %zu, clamping to safe value", length);
+ length = min(sizeof(buf->val), length);
+ buf->len = cpu_to_be16(length);
+}
+
+/*
+ * For use on buffers returned from ibm,get-system-parameter before
+ * returning them to callers. Ensures the encoded length of valid data
+ * cannot overrun buf->val[].
+ */
+static void papr_sysparm_buf_clamp_length(struct papr_sysparm_buf *buf)
+{
+ papr_sysparm_buf_set_length(buf, papr_sysparm_buf_get_length(buf));
+}
+
+/*
+ * Perform some basic diligence on the system parameter buffer before
+ * submitting it to RTAS.
+ */
+static bool papr_sysparm_buf_can_submit(const struct papr_sysparm_buf *buf)
+{
+ /*
+ * Firmware ought to reject buffer lengths that exceed the
+ * maximum specified in PAPR, but there's no reason for the
+ * kernel to allow them either.
+ */
+ if (papr_sysparm_buf_get_length(buf) > sizeof(buf->val))
+ return false;
+
+ return true;
+}
+
/**
* papr_sysparm_get() - Retrieve the value of a PAPR system parameter.
* @param: PAPR system parameter token as described in
@@ -47,7 +93,6 @@ void papr_sysparm_buf_free(struct papr_sysparm_buf *buf)
*
* Return: 0 on success, -errno otherwise. @buf is unmodified on error.
*/
-
int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf)
{
const s32 token = rtas_function_token(RTAS_FN_IBM_GET_SYSTEM_PARAMETER);
@@ -63,6 +108,9 @@ int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf)
if (token == RTAS_UNKNOWN_SERVICE)
return -ENOENT;
+ if (!papr_sysparm_buf_can_submit(buf))
+ return -EINVAL;
+
work_area = rtas_work_area_alloc(sizeof(*buf));
memcpy(rtas_work_area_raw_buf(work_area), buf, sizeof(*buf));
@@ -77,6 +125,7 @@ int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf)
case 0:
ret = 0;
memcpy(buf, rtas_work_area_raw_buf(work_area), sizeof(*buf));
+ papr_sysparm_buf_clamp_length(buf);
break;
case -3: /* parameter not implemented */
ret = -EOPNOTSUPP;
@@ -115,6 +164,9 @@ int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf)
if (token == RTAS_UNKNOWN_SERVICE)
return -ENOENT;
+ if (!papr_sysparm_buf_can_submit(buf))
+ return -EINVAL;
+
work_area = rtas_work_area_alloc(sizeof(*buf));
memcpy(rtas_work_area_raw_buf(work_area), buf, sizeof(*buf));
@@ -149,3 +201,152 @@ int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf)
return ret;
}
+
+static struct papr_sysparm_buf *
+papr_sysparm_buf_from_user(const struct papr_sysparm_io_block __user *user_iob)
+{
+ struct papr_sysparm_buf *kern_spbuf;
+ long err;
+ u16 len;
+
+ /*
+ * The length of valid data that userspace claims to be in
+ * user_iob->data[].
+ */
+ if (get_user(len, &user_iob->length))
+ return ERR_PTR(-EFAULT);
+
+ static_assert(sizeof(user_iob->data) >= PAPR_SYSPARM_MAX_INPUT);
+ static_assert(sizeof(kern_spbuf->val) >= PAPR_SYSPARM_MAX_INPUT);
+
+ if (len > PAPR_SYSPARM_MAX_INPUT)
+ return ERR_PTR(-EINVAL);
+
+ kern_spbuf = papr_sysparm_buf_alloc();
+ if (!kern_spbuf)
+ return ERR_PTR(-ENOMEM);
+
+ papr_sysparm_buf_set_length(kern_spbuf, len);
+
+ if (len > 0 && copy_from_user(kern_spbuf->val, user_iob->data, len)) {
+ err = -EFAULT;
+ goto free_sysparm_buf;
+ }
+
+ return kern_spbuf;
+
+free_sysparm_buf:
+ papr_sysparm_buf_free(kern_spbuf);
+ return ERR_PTR(err);
+}
+
+static int papr_sysparm_buf_to_user(const struct papr_sysparm_buf *kern_spbuf,
+ struct papr_sysparm_io_block __user *user_iob)
+{
+ u16 len_out = papr_sysparm_buf_get_length(kern_spbuf);
+
+ if (put_user(len_out, &user_iob->length))
+ return -EFAULT;
+
+ static_assert(sizeof(user_iob->data) >= PAPR_SYSPARM_MAX_OUTPUT);
+ static_assert(sizeof(kern_spbuf->val) >= PAPR_SYSPARM_MAX_OUTPUT);
+
+ if (copy_to_user(user_iob->data, kern_spbuf->val, PAPR_SYSPARM_MAX_OUTPUT))
+ return -EFAULT;
+
+ return 0;
+}
+
+static long papr_sysparm_ioctl_get(struct papr_sysparm_io_block __user *user_iob)
+{
+ struct papr_sysparm_buf *kern_spbuf;
+ papr_sysparm_t param;
+ long ret;
+
+ if (get_user(param.token, &user_iob->parameter))
+ return -EFAULT;
+
+ kern_spbuf = papr_sysparm_buf_from_user(user_iob);
+ if (IS_ERR(kern_spbuf))
+ return PTR_ERR(kern_spbuf);
+
+ ret = papr_sysparm_get(param, kern_spbuf);
+ if (ret)
+ goto free_sysparm_buf;
+
+ ret = papr_sysparm_buf_to_user(kern_spbuf, user_iob);
+ if (ret)
+ goto free_sysparm_buf;
+
+ ret = 0;
+
+free_sysparm_buf:
+ papr_sysparm_buf_free(kern_spbuf);
+ return ret;
+}
+
+
+static long papr_sysparm_ioctl_set(struct papr_sysparm_io_block __user *user_iob)
+{
+ struct papr_sysparm_buf *kern_spbuf;
+ papr_sysparm_t param;
+ long ret;
+
+ if (get_user(param.token, &user_iob->parameter))
+ return -EFAULT;
+
+ kern_spbuf = papr_sysparm_buf_from_user(user_iob);
+ if (IS_ERR(kern_spbuf))
+ return PTR_ERR(kern_spbuf);
+
+ ret = papr_sysparm_set(param, kern_spbuf);
+ if (ret)
+ goto free_sysparm_buf;
+
+ ret = 0;
+
+free_sysparm_buf:
+ papr_sysparm_buf_free(kern_spbuf);
+ return ret;
+}
+
+static long papr_sysparm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
+{
+ void __user *argp = (__force void __user *)arg;
+ long ret;
+
+ switch (ioctl) {
+ case PAPR_SYSPARM_IOC_GET:
+ ret = papr_sysparm_ioctl_get(argp);
+ break;
+ case PAPR_SYSPARM_IOC_SET:
+ if (filp->f_mode & FMODE_WRITE)
+ ret = papr_sysparm_ioctl_set(argp);
+ else
+ ret = -EBADF;
+ break;
+ default:
+ ret = -ENOIOCTLCMD;
+ break;
+ }
+ return ret;
+}
+
+static const struct file_operations papr_sysparm_ops = {
+ .unlocked_ioctl = papr_sysparm_ioctl,
+};
+
+static struct miscdevice papr_sysparm_dev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "papr-sysparm",
+ .fops = &papr_sysparm_ops,
+};
+
+static __init int papr_sysparm_init(void)
+{
+ if (!rtas_function_implemented(RTAS_FN_IBM_GET_SYSTEM_PARAMETER))
+ return -ENODEV;
+
+ return misc_register(&papr_sysparm_dev);
+}
+machine_device_initcall(pseries, papr_sysparm_init);
diff --git a/arch/powerpc/platforms/pseries/papr-vpd.c b/arch/powerpc/platforms/pseries/papr-vpd.c
new file mode 100644
index 0000000000..c29e85db5f
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/papr-vpd.c
@@ -0,0 +1,541 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#define pr_fmt(fmt) "papr-vpd: " fmt
+
+#include <linux/anon_inodes.h>
+#include <linux/build_bug.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/lockdep.h>
+#include <linux/kernel.h>
+#include <linux/miscdevice.h>
+#include <linux/signal.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/string_helpers.h>
+#include <linux/uaccess.h>
+#include <asm/machdep.h>
+#include <asm/papr-vpd.h>
+#include <asm/rtas-work-area.h>
+#include <asm/rtas.h>
+#include <uapi/asm/papr-vpd.h>
+
+/*
+ * Function-specific return values for ibm,get-vpd, derived from PAPR+
+ * v2.13 7.3.20 "ibm,get-vpd RTAS Call".
+ */
+#define RTAS_IBM_GET_VPD_COMPLETE 0 /* All VPD has been retrieved. */
+#define RTAS_IBM_GET_VPD_MORE_DATA 1 /* More VPD is available. */
+#define RTAS_IBM_GET_VPD_START_OVER -4 /* VPD changed, restart call sequence. */
+
+/**
+ * struct rtas_ibm_get_vpd_params - Parameters (in and out) for ibm,get-vpd.
+ * @loc_code: In: Caller-provided location code buffer. Must be RTAS-addressable.
+ * @work_area: In: Caller-provided work area buffer for results.
+ * @sequence: In: Sequence number. Out: Next sequence number.
+ * @written: Out: Bytes written by ibm,get-vpd to @work_area.
+ * @status: Out: RTAS call status.
+ */
+struct rtas_ibm_get_vpd_params {
+ const struct papr_location_code *loc_code;
+ struct rtas_work_area *work_area;
+ u32 sequence;
+ u32 written;
+ s32 status;
+};
+
+/**
+ * rtas_ibm_get_vpd() - Call ibm,get-vpd to fill a work area buffer.
+ * @params: See &struct rtas_ibm_get_vpd_params.
+ *
+ * Calls ibm,get-vpd until it errors or successfully deposits data
+ * into the supplied work area. Handles RTAS retry statuses. Maps RTAS
+ * error statuses to reasonable errno values.
+ *
+ * The caller is expected to invoke rtas_ibm_get_vpd() multiple times
+ * to retrieve all the VPD for the provided location code. Only one
+ * sequence should be in progress at any time; starting a new sequence
+ * will disrupt any sequence already in progress. Serialization of VPD
+ * retrieval sequences is the responsibility of the caller.
+ *
+ * The caller should inspect @params.status to determine whether more
+ * calls are needed to complete the sequence.
+ *
+ * Context: May sleep.
+ * Return: -ve on error, 0 otherwise.
+ */
+static int rtas_ibm_get_vpd(struct rtas_ibm_get_vpd_params *params)
+{
+ const struct papr_location_code *loc_code = params->loc_code;
+ struct rtas_work_area *work_area = params->work_area;
+ u32 rets[2];
+ s32 fwrc;
+ int ret;
+
+ lockdep_assert_held(&rtas_ibm_get_vpd_lock);
+
+ do {
+ fwrc = rtas_call(rtas_function_token(RTAS_FN_IBM_GET_VPD), 4, 3,
+ rets,
+ __pa(loc_code),
+ rtas_work_area_phys(work_area),
+ rtas_work_area_size(work_area),
+ params->sequence);
+ } while (rtas_busy_delay(fwrc));
+
+ switch (fwrc) {
+ case RTAS_HARDWARE_ERROR:
+ ret = -EIO;
+ break;
+ case RTAS_INVALID_PARAMETER:
+ ret = -EINVAL;
+ break;
+ case RTAS_IBM_GET_VPD_START_OVER:
+ ret = -EAGAIN;
+ break;
+ case RTAS_IBM_GET_VPD_MORE_DATA:
+ params->sequence = rets[0];
+ fallthrough;
+ case RTAS_IBM_GET_VPD_COMPLETE:
+ params->written = rets[1];
+ /*
+ * Kernel or firmware bug, do not continue.
+ */
+ if (WARN(params->written > rtas_work_area_size(work_area),
+ "possible write beyond end of work area"))
+ ret = -EFAULT;
+ else
+ ret = 0;
+ break;
+ default:
+ ret = -EIO;
+ pr_err_ratelimited("unexpected ibm,get-vpd status %d\n", fwrc);
+ break;
+ }
+
+ params->status = fwrc;
+ return ret;
+}
+
+/*
+ * Internal VPD "blob" APIs for accumulating ibm,get-vpd results into
+ * an immutable buffer to be attached to a file descriptor.
+ */
+struct vpd_blob {
+ const char *data;
+ size_t len;
+};
+
+static bool vpd_blob_has_data(const struct vpd_blob *blob)
+{
+ return blob->data && blob->len;
+}
+
+static void vpd_blob_free(const struct vpd_blob *blob)
+{
+ if (blob) {
+ kvfree(blob->data);
+ kfree(blob);
+ }
+}
+
+/**
+ * vpd_blob_extend() - Append data to a &struct vpd_blob.
+ * @blob: The blob to extend.
+ * @data: The new data to append to @blob.
+ * @len: The length of @data.
+ *
+ * Context: May sleep.
+ * Return: -ENOMEM on allocation failure, 0 otherwise.
+ */
+static int vpd_blob_extend(struct vpd_blob *blob, const char *data, size_t len)
+{
+ const size_t new_len = blob->len + len;
+ const size_t old_len = blob->len;
+ const char *old_ptr = blob->data;
+ char *new_ptr;
+
+ new_ptr = old_ptr ?
+ kvrealloc(old_ptr, old_len, new_len, GFP_KERNEL_ACCOUNT) :
+ kvmalloc(len, GFP_KERNEL_ACCOUNT);
+
+ if (!new_ptr)
+ return -ENOMEM;
+
+ memcpy(&new_ptr[old_len], data, len);
+ blob->data = new_ptr;
+ blob->len = new_len;
+ return 0;
+}
+
+/**
+ * vpd_blob_generate() - Construct a new &struct vpd_blob.
+ * @generator: Function that supplies the blob data.
+ * @arg: Context pointer supplied by caller, passed to @generator.
+ *
+ * The @generator callback is invoked until it returns NULL. @arg is
+ * passed to @generator in its first argument on each call. When
+ * @generator returns data, it should store the data length in its
+ * second argument.
+ *
+ * Context: May sleep.
+ * Return: A completely populated &struct vpd_blob, or NULL on error.
+ */
+static const struct vpd_blob *
+vpd_blob_generate(const char * (*generator)(void *, size_t *), void *arg)
+{
+ struct vpd_blob *blob;
+ const char *buf;
+ size_t len;
+ int err = 0;
+
+ blob = kzalloc(sizeof(*blob), GFP_KERNEL_ACCOUNT);
+ if (!blob)
+ return NULL;
+
+ while (err == 0 && (buf = generator(arg, &len)))
+ err = vpd_blob_extend(blob, buf, len);
+
+ if (err != 0 || !vpd_blob_has_data(blob))
+ goto free_blob;
+
+ return blob;
+free_blob:
+ vpd_blob_free(blob);
+ return NULL;
+}
+
+/*
+ * Internal VPD sequence APIs. A VPD sequence is a series of calls to
+ * ibm,get-vpd for a given location code. The sequence ends when an
+ * error is encountered or all VPD for the location code has been
+ * returned.
+ */
+
+/**
+ * struct vpd_sequence - State for managing a VPD sequence.
+ * @error: Shall be zero as long as the sequence has not encountered an error,
+ * -ve errno otherwise. Use vpd_sequence_set_err() to update this.
+ * @params: Parameter block to pass to rtas_ibm_get_vpd().
+ */
+struct vpd_sequence {
+ int error;
+ struct rtas_ibm_get_vpd_params params;
+};
+
+/**
+ * vpd_sequence_begin() - Begin a VPD retrieval sequence.
+ * @seq: Uninitialized sequence state.
+ * @loc_code: Location code that defines the scope of the VPD to return.
+ *
+ * Initializes @seq with the resources necessary to carry out a VPD
+ * sequence. Callers must pass @seq to vpd_sequence_end() regardless
+ * of whether the sequence succeeds.
+ *
+ * Context: May sleep.
+ */
+static void vpd_sequence_begin(struct vpd_sequence *seq,
+ const struct papr_location_code *loc_code)
+{
+ /*
+ * Use a static data structure for the location code passed to
+ * RTAS to ensure it's in the RMA and avoid a separate work
+ * area allocation. Guarded by the function lock.
+ */
+ static struct papr_location_code static_loc_code;
+
+ /*
+ * We could allocate the work area before acquiring the
+ * function lock, but that would allow concurrent requests to
+ * exhaust the limited work area pool for no benefit. So
+ * allocate the work area under the lock.
+ */
+ mutex_lock(&rtas_ibm_get_vpd_lock);
+ static_loc_code = *loc_code;
+ *seq = (struct vpd_sequence) {
+ .params = {
+ .work_area = rtas_work_area_alloc(SZ_4K),
+ .loc_code = &static_loc_code,
+ .sequence = 1,
+ },
+ };
+}
+
+/**
+ * vpd_sequence_end() - Finalize a VPD retrieval sequence.
+ * @seq: Sequence state.
+ *
+ * Releases resources obtained by vpd_sequence_begin().
+ */
+static void vpd_sequence_end(struct vpd_sequence *seq)
+{
+ rtas_work_area_free(seq->params.work_area);
+ mutex_unlock(&rtas_ibm_get_vpd_lock);
+}
+
+/**
+ * vpd_sequence_should_stop() - Determine whether a VPD retrieval sequence
+ * should continue.
+ * @seq: VPD sequence state.
+ *
+ * Examines the sequence error state and outputs of the last call to
+ * ibm,get-vpd to determine whether the sequence in progress should
+ * continue or stop.
+ *
+ * Return: True if the sequence has encountered an error or if all VPD for
+ * this sequence has been retrieved. False otherwise.
+ */
+static bool vpd_sequence_should_stop(const struct vpd_sequence *seq)
+{
+ bool done;
+
+ if (seq->error)
+ return true;
+
+ switch (seq->params.status) {
+ case 0:
+ if (seq->params.written == 0)
+ done = false; /* Initial state. */
+ else
+ done = true; /* All data consumed. */
+ break;
+ case 1:
+ done = false; /* More data available. */
+ break;
+ default:
+ done = true; /* Error encountered. */
+ break;
+ }
+
+ return done;
+}
+
+static int vpd_sequence_set_err(struct vpd_sequence *seq, int err)
+{
+ /* Preserve the first error recorded. */
+ if (seq->error == 0)
+ seq->error = err;
+
+ return seq->error;
+}
+
+/*
+ * Generator function to be passed to vpd_blob_generate().
+ */
+static const char *vpd_sequence_fill_work_area(void *arg, size_t *len)
+{
+ struct vpd_sequence *seq = arg;
+ struct rtas_ibm_get_vpd_params *p = &seq->params;
+
+ if (vpd_sequence_should_stop(seq))
+ return NULL;
+ if (vpd_sequence_set_err(seq, rtas_ibm_get_vpd(p)))
+ return NULL;
+ *len = p->written;
+ return rtas_work_area_raw_buf(p->work_area);
+}
+
+/*
+ * Higher-level VPD retrieval code below. These functions use the
+ * vpd_blob_* and vpd_sequence_* APIs defined above to create fd-based
+ * VPD handles for consumption by user space.
+ */
+
+/**
+ * papr_vpd_run_sequence() - Run a single VPD retrieval sequence.
+ * @loc_code: Location code that defines the scope of VPD to return.
+ *
+ * Context: May sleep. Holds a mutex and an RTAS work area for its
+ * duration. Typically performs multiple sleepable slab
+ * allocations.
+ *
+ * Return: A populated &struct vpd_blob on success. Encoded error
+ * pointer otherwise.
+ */
+static const struct vpd_blob *papr_vpd_run_sequence(const struct papr_location_code *loc_code)
+{
+ const struct vpd_blob *blob;
+ struct vpd_sequence seq;
+
+ vpd_sequence_begin(&seq, loc_code);
+ blob = vpd_blob_generate(vpd_sequence_fill_work_area, &seq);
+ if (!blob)
+ vpd_sequence_set_err(&seq, -ENOMEM);
+ vpd_sequence_end(&seq);
+
+ if (seq.error) {
+ vpd_blob_free(blob);
+ return ERR_PTR(seq.error);
+ }
+
+ return blob;
+}
+
+/**
+ * papr_vpd_retrieve() - Return the VPD for a location code.
+ * @loc_code: Location code that defines the scope of VPD to return.
+ *
+ * Run VPD sequences against @loc_code until a blob is successfully
+ * instantiated, or a hard error is encountered, or a fatal signal is
+ * pending.
+ *
+ * Context: May sleep.
+ * Return: A fully populated VPD blob when successful. Encoded error
+ * pointer otherwise.
+ */
+static const struct vpd_blob *papr_vpd_retrieve(const struct papr_location_code *loc_code)
+{
+ const struct vpd_blob *blob;
+
+ /*
+ * EAGAIN means the sequence errored with a -4 (VPD changed)
+ * status from ibm,get-vpd, and we should attempt a new
+ * sequence. PAPR+ v2.13 R1–7.3.20–5 indicates that this
+ * should be a transient condition, not something that happens
+ * continuously. But we'll stop trying on a fatal signal.
+ */
+ do {
+ blob = papr_vpd_run_sequence(loc_code);
+ if (!IS_ERR(blob)) /* Success. */
+ break;
+ if (PTR_ERR(blob) != -EAGAIN) /* Hard error. */
+ break;
+ pr_info_ratelimited("VPD changed during retrieval, retrying\n");
+ cond_resched();
+ } while (!fatal_signal_pending(current));
+
+ return blob;
+}
+
+static ssize_t papr_vpd_handle_read(struct file *file, char __user *buf, size_t size, loff_t *off)
+{
+ const struct vpd_blob *blob = file->private_data;
+
+ /* bug: we should not instantiate a handle without any data attached. */
+ if (!vpd_blob_has_data(blob)) {
+ pr_err_once("handle without data\n");
+ return -EIO;
+ }
+
+ return simple_read_from_buffer(buf, size, off, blob->data, blob->len);
+}
+
+static int papr_vpd_handle_release(struct inode *inode, struct file *file)
+{
+ const struct vpd_blob *blob = file->private_data;
+
+ vpd_blob_free(blob);
+
+ return 0;
+}
+
+static loff_t papr_vpd_handle_seek(struct file *file, loff_t off, int whence)
+{
+ const struct vpd_blob *blob = file->private_data;
+
+ return fixed_size_llseek(file, off, whence, blob->len);
+}
+
+
+static const struct file_operations papr_vpd_handle_ops = {
+ .read = papr_vpd_handle_read,
+ .llseek = papr_vpd_handle_seek,
+ .release = papr_vpd_handle_release,
+};
+
+/**
+ * papr_vpd_create_handle() - Create a fd-based handle for reading VPD.
+ * @ulc: Location code in user memory; defines the scope of the VPD to
+ * retrieve.
+ *
+ * Handler for PAPR_VPD_IOC_CREATE_HANDLE ioctl command. Validates
+ * @ulc and instantiates an immutable VPD "blob" for it. The blob is
+ * attached to a file descriptor for reading by user space. The memory
+ * backing the blob is freed when the file is released.
+ *
+ * The entire requested VPD is retrieved by this call and all
+ * necessary RTAS interactions are performed before returning the fd
+ * to user space. This keeps the read handler simple and ensures that
+ * the kernel can prevent interleaving of ibm,get-vpd call sequences.
+ *
+ * Return: The installed fd number if successful, -ve errno otherwise.
+ */
+static long papr_vpd_create_handle(struct papr_location_code __user *ulc)
+{
+ struct papr_location_code klc;
+ const struct vpd_blob *blob;
+ struct file *file;
+ long err;
+ int fd;
+
+ if (copy_from_user(&klc, ulc, sizeof(klc)))
+ return -EFAULT;
+
+ if (!string_is_terminated(klc.str, ARRAY_SIZE(klc.str)))
+ return -EINVAL;
+
+ blob = papr_vpd_retrieve(&klc);
+ if (IS_ERR(blob))
+ return PTR_ERR(blob);
+
+ fd = get_unused_fd_flags(O_RDONLY | O_CLOEXEC);
+ if (fd < 0) {
+ err = fd;
+ goto free_blob;
+ }
+
+ file = anon_inode_getfile("[papr-vpd]", &papr_vpd_handle_ops,
+ (void *)blob, O_RDONLY);
+ if (IS_ERR(file)) {
+ err = PTR_ERR(file);
+ goto put_fd;
+ }
+
+ file->f_mode |= FMODE_LSEEK | FMODE_PREAD;
+ fd_install(fd, file);
+ return fd;
+put_fd:
+ put_unused_fd(fd);
+free_blob:
+ vpd_blob_free(blob);
+ return err;
+}
+
+/*
+ * Top-level ioctl handler for /dev/papr-vpd.
+ */
+static long papr_vpd_dev_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
+{
+ void __user *argp = (__force void __user *)arg;
+ long ret;
+
+ switch (ioctl) {
+ case PAPR_VPD_IOC_CREATE_HANDLE:
+ ret = papr_vpd_create_handle(argp);
+ break;
+ default:
+ ret = -ENOIOCTLCMD;
+ break;
+ }
+ return ret;
+}
+
+static const struct file_operations papr_vpd_ops = {
+ .unlocked_ioctl = papr_vpd_dev_ioctl,
+};
+
+static struct miscdevice papr_vpd_dev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "papr-vpd",
+ .fops = &papr_vpd_ops,
+};
+
+static __init int papr_vpd_init(void)
+{
+ if (!rtas_function_implemented(RTAS_FN_IBM_GET_VPD))
+ return -ENODEV;
+
+ return misc_register(&papr_vpd_dev);
+}
+machine_device_initcall(pseries, papr_vpd_init);
diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 8376f03f93..bba4ad192b 100644
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -55,6 +55,7 @@ extern int dlpar_detach_node(struct device_node *);
extern int dlpar_acquire_drc(u32 drc_index);
extern int dlpar_release_drc(u32 drc_index);
extern int dlpar_unisolate_drc(u32 drc_index);
+extern void post_mobility_fixup(void);
void queue_hotplug_event(struct pseries_hp_errorlog *hp_errlog);
int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_errlog);
diff --git a/arch/powerpc/platforms/pseries/suspend.c b/arch/powerpc/platforms/pseries/suspend.c
index 5c43435472..382003dfdb 100644
--- a/arch/powerpc/platforms/pseries/suspend.c
+++ b/arch/powerpc/platforms/pseries/suspend.c
@@ -13,6 +13,7 @@
#include <asm/mmu.h>
#include <asm/rtas.h>
#include <asm/topology.h>
+#include "pseries.h"
static struct device suspend_dev;